Convertible
Convertible , adjective
[Latin convertibilis: compare French convertible.]
1.
Capable of being converted; susceptible of change; transmutable; transformable.
Minerals are not convertible into another species, though of the same genus.
2.
Capable of being exchanged or interchanged; reciprocal; interchangeable.
So long as we are in the regions of nature, miraculous and improbable, miraculous and incredible, may be allowed to remain convertible terms.